نتایج جستجو برای: fe sem
تعداد نتایج: 140289 فیلتر نتایج به سال:
Ce-Fe-Co-B is a promising system for permanent magnets. A high-throughput screening method combining diffusion couples, key alloys, Scanning Electron Microscope/Wavelength Dispersive X-ray Spectroscope (SEM/WDS), and Magnetic Force Microscope (MFM) is used in this research to understand the phase equilibria and to explore promising magnetic phases in this system. Three magnetic phases were dete...
Introduction: Short-lived radionuclides were synthesized either by irradiation with energetic particles or by stellar nucleosynthesis. The recent discovery in CAIs from carbonaceous chondrites of evidence for live 10 Be [1], which is only produced by energetic-particle irradiation , has led to suggestions that the major portion of many short-lived radionuclides (was produced by irradiation. How...
Well aligned and highly efficient field emission (FE) results have been obtained with regular arrays of gold nanowire (NW) patches [1]. However, strong variations of the maximum current Imax among single Au-NW patches have been attributed to contact problems between wires and substrate [2]. Recently we have focused our research in finding a systematic correlation between FE properties and morph...
تزئین زرینفام لایه نازکی باساختار نانو است که ازنانوبلورهای مس و نقره فلزی پراکنده در یک بافت شیشهای تشکیل شده است. درمورد لعابهای با تزئین زرینفام آنچه مشاهده میشود اعم از رنگ و یا درخشش، نتیجه جذب و پخش (بازتاب پخشیده) نور میباشد. اندازه نانوذرات فلزی بر رفتار متقابل این ذرات با نور و درنتیجه رنگ آنها تاثیری اساسی دارد. آنچه ناظر میبیند نتیجه جذب بعضی ازطول موجها و پخش و/ یا بازتاب بع...
we evaluated the effect of fe/alumina catalyst contained different cadmium contents and two synthesis temperatures on producing carbon nanotubes by chemical vapor deposition of methane as a feedstock. x-ray powder diffraction (xrd), n2 adsorption-desorption, scanning electron microscopy (sem), transmission electron microscopy (tem), raman spectroscopy and thermogravimetry analysis (tga) were u...
در این کار پژوهشی هیدروکسید دوگانه لا یه ای کبالت –آهن ) co/fe ( به وسیله روش جدید و ساده الکتروشیمیایی روی الکترود کربن شیشه ای سنتز شد. رفتار الکترو شیمیایی co/fe-ldh ترسیب شده روی الکترود کربن شیشه ای درون 1 مولار سود مورد بررسی قرارگرفت. علاوه براین فیلم تهیه شده بوسیله پراش پرتو / محلول 1 x ( xrd (، الگوی) sem ،) والگوی) edx ( بررسی شد. الکترود کربن شیشه ای اصلاح شده با co/fe-ldh برای ا...
It is imperative to understand and systematically compare the initial interactions between bacteria genre and surface properties. Thus, we fabricated a flat, anodized with 80 nm TiO₂ nanotubes (NTs), and a rough Ti6Al4V surface. The materials were characterized using field-emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX) and atomic force microscopy (AFM...
The effect of temperature on isolation and characterization of hydroxyapatite (HAp) from tuna bone was evaluated at different temperatures ranging from 200 °C to 1200 °C. The calcined bones were characterized by thermo gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray...
In this work, the effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the mechanical properties and durability of ultra high strength concrete (UHSC) is reported. First, the MWCNTs were dispersed by a nano sand-mill in the presence of a surfactant in water. The UHSC specimens were prepared with various amounts of MWCNTs, ranging from 0% to 0.15% by weight of cement (bwoc). Resul...
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